无论浏览器的大小如何,文本居中并在页面上对齐

Having text center and aligned on the page no matter what the size of the browser is

我在 HTML 中使用标签 <h1> 并且我试图将文本放在网页的中间,无论您如何更改网页的大小。基本上,文本也会响应网页的大小。这就是我的意思:

在我的 css 页面中,我尝试执行以下操作:

h1 {
 text-align: center;
 display: table-cell;
 vertical-align: middle;
}

但是,这没有用。我该怎么做?

试试这个:

 body{
       position:relative;
    }

    h1{
       position:absolute;
       width: /*your desired width*/
       top:0;
       bottom:0;
       left:0;
       right:0;
       margin:auto auto;
       text-align:center;
    }

注意:当您使用绝对子 class 时,父 class 始终是相对的。

你可以通过多种方式做到这一点,两种常见的方式是 positioningFlexbox:

定位:

body {
  position: relative; /* usually the parent, in this case the body element, has position relative so that the absolute positioned child is positioned relative to it */
  height: 100vh; /* 100% of the viewport height */
  margin: 0; /* recommended */
}

h1 {
 position: absolute; /* taken out of the normal flow of the document */
 top: 50%; /* moved down by 50% of the screen height */
 transform: translateY(-50%); /* moved back up (Y axis) by half of its height to achieve the perfect center */
 width: 100%; /* needs to be defined to keep the default block behavior */
 text-align: center;
 margin: 0; /* again, for perfect center */
}
<h1>This is center aligned text</h1>

弹性框:

body { /* or any other parent element */
  display: flex; /* flex behavior (displays children inline) */
  justify-content: center; /* horizontal centering */
  align-items: center; /* vertical centering */
  height: 100vh;
  margin: 0;
}

h1 {
  text-align: center; /* comes in handy when resizing the browser width, if the text is long/big enough */
}
<h1>This is center aligned text</h1>

作为一个 table 单元格,正如您所尝试的那样,它可以工作但是它是包装器而不是 h1 元素要成为 "table-cell",因此 h1 可以垂直居中到中间。要使该单元格覆盖整个屏幕,您可以使用 100vh 高度和 100wv 宽度...或使用 4 个角固定位置以强制它覆盖整个屏幕(顶部;0,left:0,right:0 , bottom:0;).